Table 4 MCAT performance measures and item reduction on general HRQOL factor for each simulation
From: Applying multidimensional computerized adaptive testing to the MSQOL-54: a simulation study
Simulation | Mean number of administered items, median (interquartile range) | Item reduction | Mean SE (range) | Correlation between \(\widehat{\theta }\) and θ | RMSD |
|---|---|---|---|---|---|
Full | 44 | - | 0.28 (0.26–0.43) | 0.96 | 0.29 |
1 | 44 | 0 | 0.28 (0.26–0.43) | 0.96 | 0.29 |
2 | 31, 35 (21–42) | 28.7% | 0.31 (0.26–0.55) | 0.94 | 0.32 |
3 | 26, 24 (22–29) | 41.1% | 0.31 (0.29–0.43) | 0.94 | 0.32 |
4 | 23, 22 (20–27) | 48.5% | 0.33 (0.29–0.55) | 0.94 | 0.34 |
5 | 44 | 0 | 0.28 (0.26–0.43) | 0.96 | 0.29 |
6 | 31, 35 (21–42) | 28.7% | 0.31 (0.26–0.55) | 0.94 | 0.32 |
7 | 10, 9 (9–10) | 77.6% | 0.39 (0.36–0.43) | 0.91 | 0.41 |
8 | 10, 9 (9–10) | 78% | 0.39 (0.36–0.55) | 0.91 | 0.41 |